You’re right. But they already started keeping their internal dev branch private this year, which hinders everyone else working on the AOSP, including GrapheneOS. While in theory AOSP is still FOSS, they are doing everything they can to gain more control and keep rom developers and other stakeholders out of date.

And even though Android is FOSS, more and more Android device manufacturers are locking down their bootloaders, thus leaving no option to switch to an alternative.

We need a viable alternative to Android. Google has clearly shown that it’s a terrible steward for anything under its wing. Even if they somehow backtrack, they will continue pushing anti consumer practices in the long term. It’s been a couple of years now that I can’t install an apk that is unavailable in my country, because they’re somehow verifying my country with Google Play services. I’ve managed to ditch Chrome this year after 16 years and I’m not looking back, I wish I had done this earlier. If only there was an open Android alternative I could jump to.